The royal decree of 19 May 1806 also gave new colours and standards to the Portuguese Army.
Each infantry regiment was given two flags. The first was in distinctive geometrical shapes in a mix red, blue white and yellow. The second was a relatively plain regimental colour, in the appropriate divisional colour to which the regiment belonged. Infantry regimental flags had cravats in the regimental colours attached immediately below the flag staff heads.
Six regiments which had taken part in the war against France were granted an inscription on their colours by the Warrant of 17 December 1795.
3rd Regiment ‘Ao Valor do I. Regimento de Olivença'; 4th Regiment ‘Ao Valor do Regimento de Freire'; 6th Regiment ‘Ao Valor do I. Regimento de Porto'; 13th Regiment ‘Ao Valor do Regimento de Peniche'; 18th Regiment ‘Ao Valor do II. Regimento de Porto'; and 19th Regiment ‘Ao Valor do Regimento de Cascaes'.
In recognition of the 9th, 11th, 21st and 23rd line regiments distinguishing themselves at Vitoria they were granted a special inscription that was added around the central white field bearing the royal arms on the King's colours. It read ‘Julgareis qual he mais Excellente? Se ser do Mundo Rei ou de Tal Gente' [Judge which is better, to be king of the world or of such people]. For a modern recreation see
Each cavalry regiment was issued with four standards, one per squadron, the 1st squadron a white standard, the 2nd red, the 3rd yellow and the 4th blue. The cavalry regiments cravats were 1st-3rd regiments white, 4th-6th scarlet, 7th-9th yellow and 10th-12th light blue.
The battalions of cacadores did not carry flags. However the 7th and 11th battalions [note the British order of battle describes the 11th as the 12th] so distinguished themselves at the battle of Vitoria in June 1813, that as a special honour these two battalions were granted colours. The flags followed the usual pattern though only in red, white & blue. They bore the legend ‘Distintos vos Sereis na Luza Historia c'os Louros que Colhestes na Victoria' [you will be distinguished in the history of Portugal by the laurels you won at Vitoria]. The cravat was yellow and black. It is not known if they received a plain second colour as well.
Also see link which has illustrations for various regiments.