Thats wrong, the British for example renamed many US made platforms (The F6 "Hellcat" was renamed to "Gannet") while the Soviets renamed the US Sherman tank to "Emcha"
The British
Fleet Air Arm (FAA) received 1,263 F6Fs under the
Lend-Lease Act; initially it was known as the
Grumman Gannet Mark I. The name Hellcat replaced it in early 1943 for the sake of simplicity, the Royal Navy at that time adopting the use of the existing American naval names for all the U.S.-made aircraft supplied to it, with the F6F-3 being designated
Hellcat F Mk.I, the F6F-5, the
Hellcat F Mk.IIand the F6F-5N, the
Hellcat NF Mk.II.
[N 7] They saw action off Norway, in the Mediterranean and in the Far East. A number were fitted with photographic reconnaissance equipment similar to the F6F-5P, receiving the designation
Hellcat FR Mk.II.
[46] The
Pacific War being a naval war, the FAA Hellcats primarily faced land based aircraft in the European and Mediterranean Theaters,
[47][48] and as a consequence experienced far fewer opportunities for air-to-air combat than their USN/Marines counterparts; they claimed a total of 52 enemy aircraft kills during 18 aerial combats from May 1944 to July 1945.
1844 Naval Air Squadron, on board
HMS Indomitable of the
British Pacific Fleet was the highest scoring unit, with 32.5 kills.
[49]
FAA Hellcats, as with other
Lend-Lease aircraft, were rapidly replaced by British aircraft after the end of the war, with only two of the 12 squadrons equipped with the Hellcat at
VJ-Day still retaining Hellcats by the end of 1945.
[50] These two squadrons were disbanded in 1946.
[50]
...............
As for "emcha" again for the case of simplicity... Coz the soviet couldnt pronounce it....
Dmitriy Fedorovich,
- On Shermans. We called them "Emchas", from M4 [in Russian, em chetyrye]