---
title: "Pentagon removes general responsible for Ukraine support and NATO flank: causes and consequences"
description: "🇺🇸 The Pentagon has prematurely removed General Charles Costanza, who was responsible for Ukraine support and the NATO flank. The removal occurred 2 months before the end of his term. Temporary command was assumed by Brigadier General John Mountford. The successor will be Thomas Felty. The reasons for the removal are unclear: some sources say it is politically neutral, while others link it to the reduction of the US presence in Europe. 🇵🇱 In Poland, the deployment of an armored brigade has already been canceled, but Trump has promised 5,000 troops. 🇺🇦 The impact on aid to Ukraine and NATO trust is in question. #Pentagon #Ukraine #NATO #USA"
date: 2026-08-08T04:26:00.000Z
lang: en
url: https://xab.info/en/posts/pentagon-removes-general-responsible-for-ukraine-support-and-nato-flank
tags: [pentagon, ukraine-war, nato, us-military, charles-costanza, donald-trump, poland]
publisher: "XAB.info"
---

# Pentagon removes general responsible for Ukraine support and NATO flank: causes and consequences

![Pentagon logo against the backdrop of the American flag: dismissal of the general responsible for Ukraine support and NATO flank](https://xab.info/media/2026/08/08/pentagon-otstranil-general-otvetstvavshego-za-podderzhku-ukrainy-i-flank-nato/pentagon-otstranil-general-otvetstvavshego-za-podderzhku-ukrainy-i-flank-nato-1.webp)

## 🎯 Key Points

- Lieutenant General Charles Costanza removed from command of V Corps 2 months before the end of his term.
- V Corps is responsible for military operations in Europe and support for Ukraine.
- Reasons for removal are unclear: officials give no explanations, sources disagree.
- Temporary command assumed by Brigadier General John Mountford.
- Successor confirmed is Major General Thomas Felty.
- Removal occurs against the backdrop of reduced US military presence in Europe and criticism from allies.

### Early removal of General Costanza amid geopolitical tensions

Major personnel changes have taken place at the Pentagon, affecting key areas of US military strategy. As reported on August 8, 2026, Lieutenant General Charles Costanza was removed from command of the US Army's V Corps ahead of schedule. This decision was made just two months before the end of his official term. Costanza, a specialist in armored warfare, had led the corps since April 2024 and was responsible for coordinating military operations in Europe, including critical support for Ukraine and ensuring the security of NATO's eastern flank.

The removal occurred against the backdrop of a broad reorganization of the country's senior military leadership. According to ABC News, during Pete Hegseth's tenure as Secretary of Defense, more than two dozen senior officers have been removed from their duties, often without public explanation. Brigadier General John B. Mountford, previously the deputy commander for readiness, has assumed temporary command of V Corps.

### Strategic role of V Corps and context of changes

V Corps plays a central role in managing US Army forces in Europe. Some of its units are based in Poland, making it a key element of deterrence on the alliance's eastern flank. Following the start of Russia's full-scale invasion of Ukraine, the corps' role increased significantly: it coordinated American military aid to Kyiv and was responsible for the presence of US forces on NATO's front line.

The candidate to succeed Costanza has already been confirmed by the US Senate. He will be Major General Thomas Felty, with the transfer of command scheduled for October 2026. However, the early removal of the current commander shifts these plans and raises questions about the stability of US military strategy in the region.

### Contradictory data on the reasons for removal

Official representatives of the military department have not provided detailed explanations for Costanza's removal. At the same time, a source familiar with the situation stated that this decision is not related to Defense Secretary Pete Hegseth's broader efforts to restructure military leadership and has no political subtext. However, other analysts point to a possible link with the current administration's policy aimed at reducing the US military presence in Europe.

This year, the Pentagon has already made a number of decisions that have drawn criticism from allies. One of the most notable was the refusal to deploy the 2nd Armored Brigade Combat Team of the 1st Cavalry Division in Poland. This decision provoked a sharp reaction in Warsaw, after which US President Donald Trump promised to station 5,000 troops in Poland, which may indicate a review of strategic priorities.

### Impact on Ukraine support and relations with allies

The removal of the general responsible for coordinating aid to Ukraine is causing concern among US NATO partners. In the context of the ongoing conflict in Europe, command stability and clarity of strategic plans are of critical importance. Any changes in leadership could affect the effectiveness of support for Kyiv and the perception of the reliability of the US as an ally.

Furthermore, the reduction of military presence in Europe and personnel changes at the Pentagon could be perceived as a signal of a review of US commitments to the alliance. This is particularly relevant in light of growing tensions on NATO's eastern flank and the need to demonstrate unity in the face of external threats.

## 🔍 Fact-Check Verification

- [Pentagon removes general responsible for Ukraine aid and NATO flank](https://www.rbc.ru/politics/08/08/2026/6a7672459a794795b7f587f8) - Подтверждает факт отстранения Костанца, его роль и временное командование Маунтфорда.
- [Pentagon removes general responsible for aid to Kyiv](https://news.mail.ru/society/71919019/) - Подтверждает отстранение и контекст поддержки Украины.
- [Commander of US corps responsible for Ukraine aid sent to retirement: what is known about him](https://news.mail.ru/society/71919616/) - Подтверждает отстранение и контекст поддержки Украины.
- [Pentagon prematurely fired general responsible for military aid to Ukraine](https://www.5-tv.ru/news/5081691/pentagon-dosrocno-uvolil-generala-otvetstvennogo-zavoennuu-pomos-ukraine/) - Подтверждает факт отстранения и контекст.

## ❓ FAQ

### Q: Who is Charles Costanza?
**A:** Lieutenant General Charles Costanza commanded the US Army's V Corps since April 2024, responsible for operations in Europe and support for Ukraine.

### Q: Why was Costanza removed?
**A:** Official reasons have not been named. Sources disagree: some say there is no political subtext, others link it to Pentagon reorganization.

### Q: Who temporarily commands V Corps?
**A:** Temporary command was assumed by Brigadier General John B. Mountford, deputy commander for readiness.

### Q: Who will be the new commander?
**A:** The successor confirmed is Major General Thomas Felty, with the transfer of command scheduled for October 2026.

### Q: How will this affect support for Ukraine?
**A:** The removal may cause temporary instability in aid coordination, but the long-term impact depends on the actions of the new command.