After receiving his law diploma, he enlisted in the Foreign Legion. He arrived in Indochina after the 1954 battle of Dien Bien Phu, which had been lost by France and which prompted prime minister Pierre Mendes France to put an end to the Indochina war at the Geneva Conference. Le Pen was then sent to Suez in 1956, but arrived only after the cease-fire. In 1953, a year before the beginning of the Algerian War, he contacted President Vincent Auriol, who approved Le Pen's proposed volunteer disaster relief project after a flood in the Netherlands. Within two days, there were 40 volunteers from his university, a group that would later help victims of an earthquake in Italy. In Paris in 1956, he was elected to the National Assembly as a member of Pierre Poujade's UDCA populist party.  Le Pen has often presented himself as the youngest member of the Assembly, but a young communist, Andre Chene, 27 years old and half a year younger, was elected in the same year.  In 1957, he became the General Secretary of the National Front of Combatants, a veterans' organization, as well as the first French politician to nominate a Muslim candidate, Ahmed Djebbour, an Algerian, elected in 1957 as deputy of Paris. The next year, following his break with Poujade, Le Pen was reelected to the National Assembly as a member of the Centre National des Independants et Paysans (CNIP) party, led by Antoine Pinay.  Le Pen claimed that he had lost his left eye when he was savagely beaten during the 1958 election campaign. Testimonies suggest however that he was only wounded in the right eye and did not lose it. He lost the sight in his left eye years later, due to an illness. (Popular belief that he wears a glass eye is unfounded.) During the 1950s, Le Pen took a close interest in the Algerian War (1954-62) and the French defence budget.  Elected deputy of the French Parliament under the Poujadist banner, Le Pen voluntarily reengaged himself for two to three months in the French Foreign Legion. He was then sent to Algeria (1957) as an intelligence officer. He has been accused of having engaged in torture. Le Pen has denied these accusations, although he admitted knowing of its use.

Answer this question "what services did he offer" by extracting the answer from the text above.
In 1957, he became the General Secretary of the National Front of Combatants, a veterans' organization,