1. Our sniper teams observed them manning an anti-aircraft gun.

2. 2 Our sniper teams observed them manning an anti-aircraft gun.

3. III was used as an anti-aircraft gun on British ships.

4. It was sometimes used as a light anti-aircraft gun during the Pacific War.

5. The Design Bureau of Research Institute No. 58 (NII-58) (formerly known as the Central Artillery Design Bureau, TsAKB), under the supervision of V.G. Grabin, began the development of a twin 57 mm S-68 automatic anti-aircraft gun based on the 57mm S-60 in the spring of 1947.