Bulgarian Army Units at the outbreak of WW1
The Bulgarian Army was organized in peace in three Inspection:
1st: (Sofia) : 1st, 6th, 7th, Infantry Division,
2nd: (Plovdiv) : 2nd, 3rd, 8th, 10th Infantry Division,
3rd: (Shumen) : 4th, 5th, 9th, Infantry Division.
In peace each regiment had 2 battalions (druzhina) of 4 companies and one battalion of 2 companies. With the mobilitazion each regimental district provided men for one active regiment with 4 battalions of 4 companies, 1 and half batalion for a reserve regiment, a replacement battalion with 6 companies, 1 Opalchenie (Territorial) battalion (first call), 1 Opalchenie battalion (second call), and 2 etappe companies. But 10th Inf. Division formed only 2 replacement battalions (instead of 4) and no reserve regiments at all. Actually all the replacement regiments formed only 4 companies. The Opalchenie first call battalions could be employed also outside of the Bulgaria, the second call battalions only for the defence of the Homeland.
There were also 20 border guards compagnies. At the mobilisation all of them expanded into battalions with the exception of battalions 11th-13th, covering Turkish border. In the first periods of the war these 17 battalions operated separately later were merged into existing regiments or newly formed regiments.
1st Sofian Inf. Division (Sofia);
1st IBrig. (Sofia): 1st Sofian Inf.Rgt. (Sofia) and 6th Tyrnovo Inf.Rgt. (Sofia);
2nd IBrig.:16th Lovech Inf.Rgt. (Orhanie); 25th Dragoman Inf.Rgt. (Tzaribrod)
In wartime 1st IBrig. created 41st Inf.Rgt., 2nd IBrig. 42nd Inf.Rgt.,which formed the 3rd IBrig.
2nd Tracian Inf. Division (Plovdiv)
1st IBrig. (Plovdiv): 9th Plovdiv Inf.Rgt. (Plovdiv) and 21st Srednogorian Inf.Rgt. (Plovdiv)
2nd IBrig. (Pazardjik);27th Chepino Inf.Rgt. (Pazardjik) and 28th Strema Inf.Rgt. (Karlovo)
In wartime: 3rd IBrig .: 43rd and 44th Inf.Rgt.
3rd Balkan Inf. Division (Sliven)
1st IBrig. (Sliven): 11th Sliven Inf.Rgt. (Sliven) and 24th Black Sea (Chernomorsky) Inf.Rgt. (Burgas)
2nd IBrig. (Jambol): 29th Jambol Inf.Rgt. (Jambol) and 32nd Zagorian Inf.Rgt. (Nova Zagora)
In wartime: 3rd IBrig .: 45th and 46th Inf.Rgt.
4th Preslav Inf. Division(Shumen)
1st IBrig. (Shumen): 7th Preslav Inf.Rgt. (Shumen) and 19th Shumen Inf.Rgt. (Razgrad)
2nd IBrig. (Varna) 8th Coast (Primorsky) Inf.Rgt. (Varna) and 31st Varna Inf.Rgt. (Eski Djumaja
In wartime: 3rd IBrig .: 47th Inf.Rgt. and 48th Inf.Rgt.
5th Danubian Inf. Division (Ruse)
1st IBrig. (Russe): 2nd Iskyr Inf.Rgt. (Ruse) and 5th Danubian Inf.Rgt. (Ruse)
2nd IBrig. (Veliko Tarnovo): 18th Etyr Inf.Rgt. (Veliko Tarnovo) and 20th Dobrudzha Inf.Rgt. (Veliko Tarnovo)
In wartime: 3rd IBrig .: 49th and 50th RInf.Rgt.
6th Bdin Inf. Division(Vidin):
1st IBrig. (Vidin): 3rd Bdin Inf.Rgt. (Vidin) and 15th Lom Inf.Rgt. (Belogradchik)
2nd IBrig. (Vratza): 35th Vratza Inf.Rgt. (Vratza) and 36th Kozloduj Inf.Rgt. (Orjahovo)
In wartime: 3rd IBrig .: 51st and 52nd RInf.Rgt.
7th Rila Inf. Division (Dupniza):
1st IBrig. (Kjustendil): 13th Rila Inf.Rgt. (Kjustendil) and 26th Pernik Inf.Rgt. (Radom)
2nd IBrig. (Samokov): 14th Macedonian Inf.Rgt. (Gorna Djumaja) and 22Thracian Inf.Rgt. (Samokov)
In wartime: 3rd IBrig .: 53rd and 54th RInf.Rgt.
8th Tundzha Inf. Division (Stara Zagora):
1st IBrig. (Haskovo): 10th Rhodopean Inf.Rgt. (Haskovo) and 30th Shejnovo Inf.Rgt. (Semeonovgrad)
2nd IBrig. (Stara Zagora):12th Balkan Inf.Rgt. (Stara Zagora) and 23rd Shipka Inf.Rgt. (Kazanlak)
In wartime: 3rd IBrig .: 55th and 56th RInf.Rgt.
9th Pleven Inf. Division (Pleven)
1st IBrig. (Pleven): 4th Pleven Inf.Rgt. (Pleven) and 17th Dorostol Inf.Rgt. (Pleven)
2nd IBrig. (Svistov): 33rd Svistov Inf.Rgt. (Svistov) and 34th Trojan Inf.Rgt. (Lovech)
In wartime: 3rd IBrig .: 57th and 58th RInf.Rgt.
10th Mediterranean (Belomorska) Inf. Division (Gumurdzhina)
1st IBrig. (Xanthi); 37th PInf.Rgt.in Inf.Rgt.(Xanthi) and 38th Odrinean Inf.Rgt. (Kyrdzhali)
2nd IBrig. (Gumurdzhina): 39th Salonika Inf.Rgt. (Gumurdzhina) and 40th Mediterranean (Belomorski) Inf.Rgt. (Dedeagach)
10th Inf. Division did nott form a reserve brigade.
In october 1915 11th Macedonian division was raised with more than 33 000 Macedonian emigrants It consisted of 1st-6th Macedonian Inf.Rgt., later 59th-64th Inf.Rgt.) of 3 batalions each.
There were 4 cavalry brigades and 11 cavalry regiments of 4 squadrons each.
Lejbgard Cavalry Regiment (Sofia).
1st Cav.Brig. (Sofia): 1st Cav.R. (Sofia),2nd Cav.R. (Lom) and 5th Cav.R. (Breznik)
2nd Cav.Brig. (Sliven): 3rd Cav.R. (Plovdiv), 4th Cav.R. (Jambol) and 7th Cav.R. (Sliven)
3rd Cav.Brig. (Russe): 9th Cav.R. (Ruse) and 10th Cav.R. (Shumen)
4th Cav.Brig. (Dedeagach): 6th Cav.R. R (Harmanli) and 8th Cav.R. (Dedeagach)
There were 10 artillery regiments of 9 batteries each (assigned to the Infantry Division)
1st Arty.Rgt. (Razgrad (5th Inf. Division), 2nd Arty.Rgt. (Vratza) (6th Inf. Division), 3rd Arty.Rgt. (Plovdiv) (2nd Inf. Division), 4th Arty.Rgt. (Sofia) (1st Inf. Division), 5th Arty.Rgt. (Shumen) (4th Inf. Division), 6th Arty.Rgt. (Sliven) (3rd Inf. Division), 7th Arty.Rgt. (Dupnica) (7th Inf. Division), 8th Arty.Rgt. (S.Zagora) (8th Inf. Division), 9th Arty.Rgt. (Sevlievo) (9th Inf. Division) and 10th Arty.Rgt. (Gumurdzhna) (10th Inf. Division).
With the mobilitazion they created 10 Artillery Brigades of 2 Artillery Regiments (on paper 6 batteries each, but 15 batteries were lacking and were usually replaced with mountain artillery batteries)
Directly subordinated to the Artillery Inspection:
-- 3 mountain artillery regiments; 1st (Berkovitza), 2nd (Dupnitza) and 3rd (Asenograd) with 6 (1st and 3rd regiments) or 8 (2nd regiment) batteries in peace.
-- 3 howitzers artillery regiments of 6 batteries; 1st (Sofia), 2nd (Stara Zagora) and 3rd (Shumen)
-- 3 fortress artillery regiments in Sofia, Shumen and Vidin. At the outbreak of the war they formed three heavy artillery regiments.
5 Pioneer battalions: 1st (Sofia), 2nd (Plovdiv), 3rd (Jambol), 4th (Shumen), 5th (Nikopol). With the mobilitazion they formed 10 battalion attached to the Infantry Division. Every battalion had 2 pioneer companies, 1 telegraph half-company and 1 pontoneer half-company.
Directly subordinated to the Engineer Inspection:
-- 1 pontoneer battalion (2 heavy company with 53m bridging material system Birago and 2 light companies with 150m Austrian bridging material)
-- 1 telegraph battalion (3 telegraph and optic companies and 1 radio-telegraph company)
-- 1 railroad battalion (3 operation and 3 construction companies)
-- 1 specialist battalion with :
------ searclight company
------ automobile company with 68 motor vehicles (with the mobilitazion 95 civil cars and lorries were added);
------ balloon company with 750 cubic metres kite ballon "Solun"
------ aeroplane unit with 2 twin seat Albatros B-1, 2 two-seat Bleriot IX-2, 1 single seat Bleriot IX bis