For those who don't read the contents of links, this is an excerpt of a Fatwa that was issued on the subject of whether or not American Muslims can fight on behalf of the United States in Muslim countries and still be good Muslims. The particular "Muhammad" in question in this case is the first ever Muslim Chaplain of the United States Army, Abdul-Rasheed Muhammad...

(21:07) Reading from Fatwa

The fatwa, a legal opinion concerning Islamic law, was issued by Muhammad's religious endorser, Taha Jabir Alwani, an Islamic scholar at the School of Islamic and Social Sciences in Leesburg, Virginia � an academy that certifies the religious credentials of those applying to be Muslim chaplains in the armed forces. Read the September 27, 2001 fatwa [English � Arabic] written by prominent scholars from Egypt, Syria, the United States, and Qatar � including a noted critic of U.S. military operations in the Middle East, Sheikh Yusuf al-Qaradawi, Grand Islamic Scholar and Chairman of the Sunna and Sira Council in Qatar. Here is a translated excerpt from that edict:

    "The Muslim (soldier) must perform his duty in this fight despite the feeling of uneasiness of "fighting without discriminating." His intention (niyya) must be to fight for enjoining of the truth and defeating falsehood. It's to prevent aggression on the innocents, or to apprehend the perpetrators and bring them to justice. It's not his concern what other consequences of the fighting that might result in his personal discomfort, since he alone can neither control it nor prevent it. Furthermore, all deeds are accounted (by God) according to the intentions. God (the Most High) does not burden any soul except what it can bear. In addition, Muslim jurists have ruled that what a Muslim cannot control he cannot be held accountable for, as God (the Most High) says: "And keep your duty to God as much as you can." 64:16. The prophet (prayer and peace be upon him) said: "when I ask of you to do something, do it as much as you can." The Muslim here is a part of a whole, if he absconds, his departure will result in a greater harm, not only for him but also for the Muslim community in his country � and here there are many millions of them. Moreover, even if fighting causes him discomfort spiritually or psychologically, this personal hardship must be endured for the greater public good, as the jurisprudence (fiqhi) rule states.

To sum up, it's acceptable � God willing � for the Muslim American military personnel to partake in the fighting in the upcoming battles, against whomever, their country decides, has perpetrated terrorism against them. Keeping in mind to have the proper intention as explained earlier, so no doubts would be cast about their loyalty to their country, or to prevent harm to befall them as might be expected. This is in accordance with the Islamic jurisprudence rules which state that necessities dictate exceptions, as well as the rule that says one may endure a small harm to avoid a much greater harm."