Arabic translation:

(white text at top)

At your service Palestine

(white text in red box)

Support

Palestine

Lebanon...

The Arab cause...

Note:

This is the first Palestine poster that I know of from the 1948 war. It was captured by the Haganah during the war with the Arab Liberation Army of Fawzi al-Qawuqji. It is currently in the Israeli State Archives. 

Salim Tamari