What is the test for determining whether injuries suffered by a plaintiff were service-related?

Here, Feres plainly bars the claims raised in the first two causes of action in the complaint. First, the injuries suffered by the decedent were certainly incidental to military service. The courts have enumerated numerous tests for determining whether injuries are service-related. Note, The Federal Tort Claims Act: A Cause of Action for Servicemen, 14 Val.U.L.Rev. 527, 557-64 (1980). Relying on Feres, this court stated in Camassar v. United States, 531 F.2d 1149 (2d Cir. 1976) (per curiam), that: