They rigged up Panthers to look like M10’s
Notice 5th Armored markings:
"Because the false vehicle numbers of the tanks knocked out were B-4, B-5, B-7, and B-10, investigators concluded that at least ten similarly disguised tanks might have been in action.
Inside the one tank which was not blown up too badly to be inspected were found items of U.S. clothing such as a helmet, overcoat, and leggings. To heighten the deception, U.S. stars were painted on both sides and also on the top of the turret, the entire tank was painted O.D., and U.S. unit markings were painted on the false bow and rear."