One in the Armed Forces who faces the enemy at the front and also one serving as a soldier, sailor, or airman in garrison, military camp, fort, or cantonment in support of forces at the front or in the performance of duty, even in time of peace. Anno: 4 ALR 850. Service in the Armed Forces, not necessarily in combat or in the movement of troops preparatory to an engagement. 57 Am J1st Wills § 663. The distinguishing feature of active service is not exposure to the assaults of the enemy; it is service by one called to perform duty in contrast to readiness to serve or training for duty prior to the time that one is called from civilian life or from the reserve. 29A Am J Rev ed Ins § 1204.