The fort was unconquerable even after a three-year war.

Nowhere is that clearer than in Congo, which has been ravaged by a three-year civil war with five foreign armies taking part.

The three-year civil war, which involves foreign nations, rebel groups and various militia, has cost an estimated 2.5 million lives.

The success of his measures was seen in the steady resistance offered by the Boers to the very close of the three-year war.

Western powers were similarly divided about using military power to force an end to the three-year war in Bosnia that started in 1992.

The pact ended the country's three-year civil war.

Its forming resulted in a three-year civil war between the two camps.

The three-year war in Spain, from 1936-39, claimed heavy casualties.

Tourism had begun to revive from the shaking it took during the brutal three-year Bosnian war.

The three-year civil war produced a decade of political instability, permanent financial, economic and social crises.