Portuguese flag

Portugal

Names	Bandeira das Quinas (Flag of the Five Escutcheons), Bandeira Verde-Rubra (Green-Red Flag)
Use	National flag and ensign
Proportion	2:3
Adopted	June 30, 1911
Design	A 2:3 vertically striped bicolour of green and red, with the lesser coat of arms of Portugal centred over the colour boundary
Variant flag of Portugal
Use	War flag
Proportion	12:13
Adopted	June 30, 1911
Design	As above, but evenly striped (1:1) and with the greater coat of arms, displaying a white scroll with the motto "Esta é a ditosa pátria minha amada" ("This is my beloved blissful homeland"), taken from Os Lusíadas, III, 21, v. 1

The Flag of Portugal (Portuguese: Bandeira de Portugal) is the national flag of the Portuguese Republic. It is a rectangular bicolour with a field unevenly divided into green on the hoist, and red on the fly. The lesser version of the national coat of arms (i.e. armillary sphere and Portuguese shield) is centred over the colour boundary at equal distance from the upper and lower edges. On June 30, 1911, less than a year after the downfall of the constitutional monarchy, this design was officially adopted for the new national flag, after selection by a special commission whose members included Columbano Bordalo Pinheiro, João Chagas and Abel Botelho.

The conjugation of the new field colours, especially the use of green, was not traditional in the Portuguese national flag's composition and represented a radical republican-inspired change that broke the bond with the former monarchical flag. Since a failed republican insurrection on January 31, 1891, red and green had been established as the colours of the Portuguese Republican Party and its associated movements, whose political prominence kept growing until it reached a culmination period following the Republican revolution of October 5, 1910. In the ensuing decades, these colours were popularly propagandized as representing the hope of the nation (green) and the blood (red) of those who died defending it, as a means to endow them with a more patriotic and dignified, therefore less political, sentiment. Although the flag flown from the Oporto city hall in the morning of January 31, 1891, symbol of the republican uprising was red and green. Totally red with a green circle in the center, to which were added the inscriptions referring to the republican center to whom it belonged - the Centro Democrático Federal 15 de Novembro.'