The alternating white and blue stripes are stated to represent the 9 syllables from the phrase "Eleftheria i thanatos" ("Liberty or Loss of life"), a well known motto over the Greek War of Independence. Through the Kingdom of Greece, a crown was extra while in the centre of the cross. https://medievaltimesflags89752.kylieblog.com/33613676/a-simple-key-for-medieval-banner-designs-unveiled