 The 1st Army Group with the 4th and 7th Armies, composed mainly of Croatian troops, was in Croatia and Slovenia defending the Italian, German (Austrian) and Hungarian frontiers.The strength of each "Army" amounted to little more than a corps, with the three Army Groups consisting of the units deployed as follows; The 3rd Army Group's 3rd Army consisted of four infantry divisions and one cavalry detachment; the 3rd Territorial Army with three infantry divisions and one independent motorized artillery regiment; the 5th Army with four infantry divisions, one cavalry division, two detachments and one independent motorized artillery regiment and the 6th Army with three infantry divisions, the two Royal Guards detachments and three infantry detachments.The 2nd Army Group's 1st Army had one infantry and one cavalry division, three detachments and six frontier defence regiments; the 2nd Army had three infantry divisions and one frontier defence regiment.