Are we refering to the Muslims, the Christians or the Jews here? I'm a Buddhist so I know you ain't talking about me!
God, you see this horseshit all the time. What makes it the more pathetic is that buddhists peddle this crap just the way all other religions do: "we're not bad people, we're peaceful and enlightened--it's the other guys who are evil."
The Tendai sect of buddhists (the name is a Japanese pronunciation of T'ien-t'ai, the Chinese buddhist sect from which the Japanese temple foundation arose) not only involved themselves in temporal affairs, they rose to such prominence in imperial and shogunal affairs that there is an entire era in Japanese history named for them. The first Tendai foundation was at Mount Hiei near Kyoto (then called Heian), and increasingly, Tendai monks became involved in political affairs. They built their quartes in the Muromachi district in the city, and a period of more than 200 years, roughly corresonding to the Ashikaga shogunate is more commonly called the Muromachi period, because the buddhist monks became so prominent in the political affairs of Japan.
But it did not end with politics. Many of the Tendai monks became sohei, or warrior monks, who protected the political interests of the Tendai, establishing monasteries to train sohei warriors, and defying in arms the political rivals of the Muromachi bureaucrats.
A more extreme example is the Ikko-Ikki sect, which was centered around the Honganji-shima buddhist "cathedral" (more of a castle, and a military base, the name cathedral was give it by the Jesuits who record the history of 16th century Japan). The Ikko-ikki were militant buddhists of the Japanese Jodo Shinshu sect, derived from the Amida buddhists of China. They joined with shinto priests, peasants and disfranchised petty nobles to spread insurrection throughout Japan, in opposition to the Ashikaga shoguns, or anyone exercising authority. They commonly instigated riots, preferably lead by farmers, who occupied a special, privileged position in Japanese society.
During the Sengoku, or Warring States period in Japanese history (mid-15th to late 16th century), the sohei of the Tendai and the Ikko-ikki fought as private armies for their political masters. When Oda Nobunaga attempted the conquest of Japan, one of his first targets was the Mt. Hiei temple, and the monks of Muromachi. Having defeated them and burned the temple, he rounded up other sohei in Japan to fight for him against the Ikko-ikki of Honganji-shima. It took nearly 15 years to bring down the Amida buddhists of Honganji-shima, who allied themselves with the Mori clan, who supplied the island fortress from the sea. In the years that remained to him before he was assassinated, Oda Nobunaga sent the sohei to hunt down and round up or kill any sohei who were not pledged to his army.
Quite apart from this, many buddhists in all ages and in all countries have been willing to take arms for their or for someone's political masters. The diffidence of buddhists toward this material life has often, in fact, provided a rationale for participating in war. That they fought for no particular god does not absolve them of the responsibility for their violence. That they did not seek to convert anyone at the point of spear doesn't make their victims any less dead.