December by the 4th Division, by mid-January by the 6th Division and the 7th Infantry Regiment. In preparation for the Battle of Bizani, the Crown Prince brought in additional troops and artillery, while a Mixed Brigade was formed to attack the fortifications of Ioannina from the northeastern flank. Order of battle before the Battle of Bizani Before the Battle of Bizani, the Army of Epirus comprised the 2nd, 4th, 6th and 8th Infantry Divisions, the Mixed Brigade, a cavalry regiment and the three independent detachments of Acheron, Preveza and Himara, in total 51 infantry battalions and other units, comprising 41,400 men with 48 machine guns and 93 field and mountain guns. These were grouped as follows, from the right to the left of the Greek front: First Army Detachment (Α′ Τμήμα Στρατιάς), under Lt Gen Konstantinos Sapountzakis, on the right of the Greek front: Mixed Metsovon Brigade (Μικτή Ταξιαρχία Μετσόβου), under Col Ioannis Papakyriazis, formed from the 4th Infantry Regiment (from 1st Division) and the Metsovon Detachment of Lt Col. Mitsas plus other units, in total six battalions, six machine guns and eight mountain guns 6th Infantry Division (VI Μεραρχία), under Col Konstantinos Miliotis-Komninos three battalions 12 field guns 8th Infantry Division (VIII Μεραρχία), under Col Dimitrios Matthaiopoulos Cretan Regiment, of 3 battalions and four machine guns 2nd Evzone Regiment, of 2 battalions and eight machine guns 8 field guns and four machine guns 2nd Infantry Division (II Μεραρχία), under Maj Gen Konstantinos Kallaris, comprising four and a half battalions, eight machine guns, twelve field guns and a cavalry half-company. Second Army Detachment (Β′ Τμήμα Στρατιάς), under Maj Gen Konstantinos Moschopoulos, CO of the 4th Infantry Division on the left of the Greek front. It comprised mainly the 4th Division (IV Μεραρχία) plus units from the other divisions, organized in three columns: First Column (Α′ Φάλαγγα) under Col Dimitrios Antoniadis, with six battalions, eight machine guns and eight mountain guns Second Column (Β′ Φάλαγγα) under Col Ioannis Giannakitsas, with eight battalions, fourteen machine guns and eight mountain guns Third Column (Γ′ Φάλαγγα) under Col Nikolaos Delagrammatikas, with six battalions, eight machine guns, 10 mountain guns, a cavalry half-company Olitsikas Detachment (Απόσπασμα Ολίτσικα) of three battalions Army Reserve or independent units within the Army's operational zone: Epirus Cavalry Regiment (Σύνταγμα Ιππικού Ηπείρου), of three companies and two machine guns Army Artillery, of six field and two heavy batteries, with 34 guns