Collection "The Photography Museum ''Christos Kalemkeris''

Date: March 9, 1946

Photograph of the diploma of the Golden Cross of Valor awarded after the war to Georgios Apostolopoulos, in recognition of his heroic struggle during the siege of Fort Istibey

Date: 1941

Drawing by a German artist inspired by the operations of the German soldiers against Fort Kelchaya in Belles, Serres

Date: Unknown

Corporal Georgios Agiannitopoulos in a photograph taken in Corinth after World War II

Date: April - May 1941

Region of Serres, end of April - beginning of May 1941. Greek prisoners of war return to Greece by crossing the destroyed bridge over the Strymon River

Date: April 1941

April 1941. Captured British officers and soldiers in Thessaloniki talking to a German officer on the right who bears the Iron Cross on his chest

Date: April 1941

Serres area, April 1941. A Greek refugee crosses the destroyed bridge of the Strymon River to escape the danger of the Bulgarian army, who occupied his place of residence

Date: April 6-7, 1941

Region of Serres, April 6-7, 1941. Explosion at the top of Fort Istibey

Date: April 6, 1941

Region of Serres, April 6, 1941. The top of Fort Istibey burning due to the explosions of German heavy artillery shells

Date: Unknown

Lieutenant Georgios Apostolopoulos, commander of the 2nd Company of Fort Istibey. The photo is courtesy of his son, Andreas Apostolopoulos

Date: April 1941

April 1941. British prisoners in a central avenue of Thessaloniki

Date: April 1941

April 1941. Gathering of Greek and British prisoners of war in Thessaloniki

Date: August 10, 1980

The bust of Sergeant Dimitrios Itsios, hero of the battle of Omorfoplagia (April 6, 1941), in the central square of Ano Poroia, Serres

Date: March 9, 1946

Photograph of the diploma of the Golden Cross of Valor awarded after the war to Georgios Apostolopoulos, in recognition of his heroic struggle during the siege of Fort Istibey

Date: April 6, 1941

Region of Serres, April 6, 1941. The top of Fort Istibey burning due to the explosions of German heavy artillery shells

Date: April - May 1941

Region of Serres, end of April - beginning of May 1941. Greek prisoners of war return to Greece by crossing the destroyed bridge over the Strymon River

Date: April 1941

April 1941. Gathering of Greek and British prisoners of war in Thessaloniki

Date: April 6-7, 1941

Region of Serres, April 6-7, 1941. Explosion at the top of Fort Istibey

Date: Unknown

Corporal Georgios Agiannitopoulos in a photograph taken in Corinth after World War II

Date: April 1941

April 1941. British prisoners in a central avenue of Thessaloniki

Date: April 1941

Serres area, April 1941. A Greek refugee crosses the destroyed bridge of the Strymon River to escape the danger of the Bulgarian army, who occupied his place of residence

Date: 1941

Drawing by a German artist inspired by the operations of the German soldiers against Fort Kelchaya in Belles, Serres

Date: Unknown

Lieutenant Georgios Apostolopoulos, commander of the 2nd Company of Fort Istibey. The photo is courtesy of his son, Andreas Apostolopoulos

Date: April 1941

April 1941. Captured British officers and soldiers in Thessaloniki talking to a German officer on the right who bears the Iron Cross on his chest

Date: August 10, 1980

The bust of Sergeant Dimitrios Itsios, hero of the battle of Omorfoplagia (April 6, 1941), in the central square of Ano Poroia, Serres

Date: March 9, 1946

Photograph of the diploma of the Golden Cross of Valor awarded after the war to Georgios Apostolopoulos, in recognition of his heroic struggle during the siege of Fort Istibey

Date: Unknown

Corporal Georgios Agiannitopoulos in a photograph taken in Corinth after World War II

Date: April 1941

April 1941. Captured British officers and soldiers in Thessaloniki talking to a German officer on the right who bears the Iron Cross on his chest

Date: April 6-7, 1941

Region of Serres, April 6-7, 1941. Explosion at the top of Fort Istibey

Date: Unknown

Lieutenant Georgios Apostolopoulos, commander of the 2nd Company of Fort Istibey. The photo is courtesy of his son, Andreas Apostolopoulos

Date: April 1941

April 1941. Gathering of Greek and British prisoners of war in Thessaloniki

Date: 1941

Drawing by a German artist inspired by the operations of the German soldiers against Fort Kelchaya in Belles, Serres

Date: April - May 1941

Region of Serres, end of April - beginning of May 1941. Greek prisoners of war return to Greece by crossing the destroyed bridge over the Strymon River

Date: April 1941

Serres area, April 1941. A Greek refugee crosses the destroyed bridge of the Strymon River to escape the danger of the Bulgarian army, who occupied his place of residence

Date: April 6, 1941

Region of Serres, April 6, 1941. The top of Fort Istibey burning due to the explosions of German heavy artillery shells

Date: April 1941

April 1941. British prisoners in a central avenue of Thessaloniki

Date: August 10, 1980

The bust of Sergeant Dimitrios Itsios, hero of the battle of Omorfoplagia (April 6, 1941), in the central square of Ano Poroia, Serres