Two infantry and two armored divisions were in place on the Aliakmon Line, south-west of Thessaloniki (Salonica), before the Axis (German, Italian and Bulgarian) invasion (Operation Brevity) on 6 April.
Dua divisi infantri dan dua resimen lapis baja ditempatkan di Garis Aliakmon, barat daya Thessaloniki (Salonica), sebelum invasi gabungan Jerman, Italia dan Bulgaria (Operasi Marita) pada 6 April.