The expeditionary force, 'Army Group Antonescu,' was composed on 22 June 1941 of the 3rd Army, the 4th Army, the 2nd Army Corps, and the 11th Infantry Division.[9] The 3rd Army comprised the 4th Army Corps (6th and 7th Infantry Divisions), the Cavalry Corps, the Mountain Corps, two separate artillery battalions, a TA unit, and the Air Force's 3rd Army Cooperation Command. The 4th Army consisted of the 3rd Army Corps, the 5th Army Corps, the 11th Army Corps (two fortress brigades), and the 4th Army Cooperation Command. The army group-level 2nd Army Corps, under Major General N. Macici, controlled the 9th and 10th Infantry Divisions and the 7th Cavalry Brigade. Additionally the 1st Armoured Division was formed for service on the Eastern Front
From Wikipedia, quiet substantial.