Não vou entrar em grandes detalhes a nível de "collocation" e estilísticos. Mas vou corrigir algumas coisinhas e sugerir outras em complemento à postagem do amigo acima:
1) it riches => its riches. (possessive adjective aqui!)
2) afinal nunca me lixei se potências estrangeiras estão querendo ou não as riquezas nacionais => after all, I couldn't care less whether foreign powers want (= turn a greedy eye towards) our national riches or not.
3) took another drink => took another sip (of the drink).
4) saw again his old friend => saw his old friend again (more usual position of adverb)
5) Prof. Moraes knew Armando Bastos since adolescence => Prof. Moraes has known Armando Bastos since adolescence. (proper verb tense)
6) Both studied at Military College in Rio de Janeiro => Both studied at the Military School in Rio de Janeiro.
7) Francisco chose took class in college => Francisco chose/decided to go to college.
8) and Armando, continue the military life => and Armando continued his military career.
9) Recently, the military look for him to suggest the “resuscitation” of an old project where both undertook. => Recently, the soldier/serviceman (= Armando) looked for him to suggest the “revival/return” of an old project they both worked hard on (= strived for success).