 In general theatre, offensives require over 250,000 troops to be committed to combat operations, including combined planning for different arms and services of the armed forces, such as air defence troops integrated into the overall plan for ground operations.A strategic offensive is often a campaign and would involve the use of over 100,000 troops as part of a general strategy of the conflict in a given theatre.For example, the Operation Barbarossa was a theatre offensive composed of three distinct and inter-related campaigns in the Southern, Central and Northern parts of USSR territory.