Wilhelm Josef Ritter von Thoma was a German army officer who served in World War I, in the Spanish Civil War, and as a general in World War II. He was a recipient of the Knight's Cross of the Iron Cross. Thoma is known for his indiscretion while a POW in the British captivity, when he unwittingly revealed the existence of the V-1 flying bomb and the V-2 weapons programmes. He was subject to surveillance by the British intelligence and while speaking to another German officer, was recorded discussing rockets that were being tested at Kummersdorf West, which he observed while on a visit that also included GeneralfeldmarschallWalther von Brauchitsch, the Commander-in-Chief of the Army. British reconnaissance flights over Peenemünde Army Research Center in May and June 1943 brought back unmistakable images of rockets at the facility; the subsequent bombing of the site severely disrupted the programme.
On 4 November 1942, Thoma was captured by the British forces and for the remainder of the war he was a prisoner in several senior officer prisoner-of-war camps in Great Britain, including Trent Park, Wilton Park, Grizedale Hall and Island Farm. Thoma was subject to surveillance by the Secret Intelligence Service and while speaking to another POW, General Ludwig Crüwell, was recorded discussing rockets that were being tested at Kummersdorf West, which he observed while on a visit that also included Field Marshal Walther von Brauchitsch, the Commander-in-Chief of the Army and other technical programme details. Following his indiscretion, further British reconnaissance flights over Peenemünde in May and June 1943 brought back unmistakable images of rockets at the facility which was developing guided missiles and long-range ballistic missiles better known as the V-1 flying bomb and the V-2 ballistic missile. When reconnaissance and intelligence information regarding the V-2 became convincing, Churchill's War Cabinet directed the first planned raid, the attack of Peenemünde in August 1943, as part of Operation Crossbow, the Anglo-American campaign against the Vergeltungswaffe, the German long-range weapons programme. In late 1945, Waffen-SS commander Kurt Meyer, captured in Belgium in September 1944 while commanding the 12th SS-Panzer Division "Hitler Jugend", arrived at Trent Park and noted that Thoma, the German camp leader, was "...highly thought of by the English. Relations between him and the guards is excellent". Churchill's high regard for Thoma is evident from his many later quotations of Thoma's opinions on strategic matters, especially in his book about the war. After Montgomery invited Thoma to dine with him in his private trailer, Churchill remarked: "I sympathize with General von Thoma: Defeated, in captivity and... dinner with Montgomery". Thoma died of a heart attack in 1948 in his home town of Dachau.
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Knight's Cross of the Iron Cross on 31 December 1941 as Generalmajor and commander of the 20th Panzer Division