US-American Curtiss H-75 with German markings. Captured from the French in 1940. 

Curtiss H-75 in German markings

Polish PZL P.7a in German markings. Rechlin Airfield testing ground/Germany.

PZL P.7a in German markings

SG 113 A &quot;Förstersonde&quot; (vertical firing AT weapon) on a FW-190 F-8 - the only time the weapon was used on the front. During tests it cracked the 18mm roof armour of a Panther as well as the 30mm roof armour of the T-34 and the 48mm of a Sherman tank.
Barrel caliber: 77mm
Projectile caliber: 45mm
Length: 1650mm
Weight: 48kg
Muzzle velocity: 650 m/sec