Caesar's military abilities, throughout his entire career is unquestionable, so it is not a matter of arguing whether or not he was successful, as we already know this answer, it is quite obvious. Of the Gallic wars it would b wiser to talk about his methods of enfranchisement, "iron fist with the velvet glove"... His incursion to Britain is of no significance with military respect, rather it developed trade routes and expansion of the empire possibilities... Caesar as a general is not questioned, particularly against the Gauls, they are no formibidable enemy as they are not as well trained, and the odds not favouring Caesar means nothing as he was at an advantage with trained men. The only battle you can talk about realli is the battle of Alesia and Vercingetorix... Other than this Caesar's military achievements are more highlighted in his battles against Pompey, where he was outnumbered with troops that were of equal ability to his. This demonstrates his ability as a general... This shows his brilliance... Many will try to talk alot about military in Gaul... the better idea and the one that is more interesting and demonstrates a deeper understanding is a discussion as to why Caesar went to Gaul and what he gained from going there... In a military frame of mind, Caesar should never have lost a battle, he always had superior forces (that is far better trained and also trained to fight together).....
Think about it a lil more dan da obvious