I just wrote what you need up there, either the free version of arma plus operation arrowhead or combined operations.
Combined ops is basically the full arma2 game plus operation arrowhead, while the free version is cut down slightly so you don't get single player and hd textures.
So, yes essentially you only need operation arrowhead if you can live with the shortcomings of the free arma2 version.
Combined ops is basically the full arma2 game plus operation arrowhead, while the free version is cut down slightly so you don't get single player and hd textures.
So, yes essentially you only need operation arrowhead if you can live with the shortcomings of the free arma2 version.