This was the official flag of Greece (First Hellenic Republic) in the War of Independence, and for 2 years after the acquisition of sovereignty. Later, it would be used again under the Second Hellenic Republic.
Data
Proportions:
2:3
Date Used:
1821-1832; 1924-1935
Design:
A blue field with a white Greek Orthodox Cross
Flag of the Kingdom of Greece
This was the longest-used flag in the history of the Modern Greek state. The final time it was taken down was in 1978, with the opening of the Third Hellenic Republic.
Data
Proportions:
2:3
Date Used:
1832-1924, 1944-1967, and 1975-1978
Design:
A blue field with a white Greek cross with the Greek crown in the center.
Flag of the 4th of August Regime
The flag above was the one used by the 4th of August Regime, under the dictator Ioannis Metaxas during his 6-year-rule.
Data
Proportions:
2:3
Date Used:
1936-1941
Design:
A flag similar to that of the Kingdom of Greece, but with a different crown and a slightly darker field.
Flag of the 1967 Military Junta
The Military Junta of 1967, infamous for its attempt of Enosis with Cyprus, used this flag for 7 years.