A military exercise or war game, is the employment of military resources in training for military operations, either exploring the effects of warfare or testing strategies without actual combat. This also serves the purpose of ensuring the combat readiness of garrisoned or deployable forces, prior to deployment from home base / home station.
Exercises in the 20th and 21st centuries have often been identified by a unique codename in the same manner as military contingency operations and combat operations.
Attached you'll find some reports of exercises, i have visited the past years, e.g. Frisian Flag, Tactical Leadership Program (TLP) or Green Shield.