The IV Army Corps (Greek: Δ' Σώμα Στρατού, abbr. Δ' ΣΣ) is an army corps of the Hellenic Army. Established before the First World War, it served in all conflicts Greece participated in until the German invasion of Greece in 1941. Re-established in 1976, it has been guarding the Greco-Turkish land border along the Evros River, and thus the most powerful formation in the Hellenic Army.
The IV Army Corps was established by Royal Decree on 23 December 1913 (O.S.) at Kavala, East Macedonia, during the reorganization of the Hellenic Army following the Balkan Wars. When East Macedonia was occupied by Bulgarian and German forces during World War I, the entire Corps, under its commander Col. Ioannis Hatzopoulos, demobilized and forbidden to offer resistance by the government in Athens, was carried by rail to Görlitz, Germany, as "guests" of the German Government, where they remained for almost three years.
During the Greco-Turkish War it was renamed the Army of Thrace and was stationed in Adrianople. In 1922, after the defeat of the Hellenic forces in Asia Minor, it covered the withdrawal of many units to Thrace, and formed part of the Army of Evros.
In November 1940, during the Greco-Italian War, it was renamed again as East Macedonia Army Section (ΤΣΑΜ) joining the rest of the army which was fighting in Albania. In April 1941 it surrendered to German forces.
In 1976 the Corps was reformed in Xanthi and currently is the most powerful formation of the Hellenic Army.
IV Army Corps (), headquartered at Xanthi, Thrace consisting of1st Artillery Regiment-MLRS (1o ΣΠΒ), based at Drama, MacedoniaHQ Company (ΛΔ/1ο ΣΠΒ)193rd Multiple Rocket Launcher Battalion (193 ΜΠΕΠ)194th Multiple Rocket Launcher Battalion (194 ΜΠΕΠ)Observation Battery (ΠΠΑΠ)1st Communications, EW, Surveillance Regiment (1ο ΣΕΗΠΠΕΠ), based at Xanthi, ThraceCorps Field and Air Defense Artillery Command and units (ΔΠΒ/Δ' ΣΣ)Corps Engineer Command and units (ΔΜΧ/Δ' ΣΣ)Corps HQ Battalion12th Mechanized Infantry Division (Greece) (XII Μ/Κ ΜΠ), based at Alexandroupoli, Thrace organised in7th Mechanized Infantry Brigade "Sarantaporos" (7η M/K ΤΑΞ Σαραντάπορος), based at Lykofytos, Thrace31st Mechanized Infantry Brigade "Kamia" (31η M/K ΤΑΞ Κάμια), based at Feres, ThraceTactical Command/41st Infantry Regiment (ΤΔ/41ο ΣΠ), based at Samothraki, North Aegean3rd Armored Cavalry Battalion (Γ' ΕΑΝ)Division Artillery Command and units (ΔΠΒ/ΧΙΙ Μ/Κ ΜΠ)12th Signal Battalion (12ο TΔΒ)Division HQ Company (ΛΣ/ΧΙΙ Μ/Κ ΜΠ)16th Mechanized Infantry Division (XVI Μ/Κ ΜΠ), based at Didymoteicho, Thrace organised in3rd Mechanized Infantry Brigade "Rimini" (3η M/K ΤΑΞ Ρίμινι), based at Kavyli, Thrace30th Mechanized Infantry Brigade "Tomoritsa" (30ή M/K ΤΑΞ Τομορίτσα), based at Lagos, ThraceTactical Command/21st Infantry Regiment "Drama" (ΤΔ/21ο ΣΠ Δράμα), based at Orestiada, Thrace4th Armored Cavalry Battalion (Δ' ΕΑΝ)Division Artillery Command and units (ΔΠΒ/ΧVΙ Μ/Κ ΜΠ)16th Signal battalion (16ο TΔΒ)Division HQ Company (ΛΣ/ΧVΙ Μ/Κ ΜΠ)20th Armored Division (XX ΤΘΜ), based at Kavala, Macedonia organised in21st Armored Brigade "Cavalry Brigade Pindus" (XXI ΤΘΤ Ταξιαρχία Ιππικού Πίνδος), based at Komotini, Thrace23rd Armored Brigade "3rd Cavalry Regiment Dorylaeum" (XXIII ΤΘΤ 3ο Σύνταγμα Ιππικού Δορύλαιον), based at Alexandroupoli, Thrace25th Armored Brigade "2nd Cavalry Regiment Ephesus" (XXV ΤΘΤ 2ο Σύνταγμα Ιππικού Έφεσος), based at Xanthi, ThraceDivision Artillery Command and units (ΔΠΒ/ΧΧ ΤΘΜ)20th Signal Battalion (20ό TΔΒ)Division HQ Company (ΙΣ/ΧΧ ΤΘΜ)50th Independent Mechanized Infantry Brigade "Apsos" (50ή M/K TAΞ Άψος), based at Soufli, Thrace29th Motorized Brigade "Pogradets" (29η ΤΑΞΠΖ Πόγραδετς), based at Komotini, Thrace
