ANSWERS ROUND 40:
1.) American M4A1 'Sherman'.
2.) American M2-2 flamethrower.
3.) German Messerschmitt Me 163B 'Komet'.
4.) German Messerschmitt P.1101.
5.) German Bachem Ba 349 'Natter'.
6.) American Republic P-47C.
7.) Soviet T-34/85, IS-2s & ISU-122 or -152.
8.) Soviet T-35.
9.) Soviet Su-85 (in German service)
10.) German Dornier Do-24MS (minesuche).
MODERN:
11.) Iraqi Mi-25 'Hind-D'.
12.) Brazilian EE-T1 Osorio.
13.) Russian Dragunov SVD.
14.) German Heckler & Koch G-36 assault rifle.
15.) Soviet 'Beluga' class experimental submarine.
Cookies goes to my favourite
Bunny,
Wjlaslo (God damn, that was hard to write

) and
Silian. Bonus correction-cookie goes to
Mazz.
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ROUND 41:
1.)

2.)

3.)

4.)

5.)

MODERN:
6.)

7.)

GOOD LUCK! 
PS: Sorry for the short round, but I have to go now.