"The President has rejected the idea that the choices in Kosovo are invading Serbia or watching the Kosovars get slaughtered."

Turkish troops invaded Serbia (at Ristovatz)

There are rumours that Austria is preparing to invade Serbia.

I have it from excellent sources that Austria is preparing to invade Serbia.

Austrian troops began to concentrate in Bosnia as a preparatory step towards invading Serbia.

As a result, when the Austrians invaded Serbia, the Serbians were ready for it.

In late 1915, however, German generals were given control and invaded Serbia with Austrian and Bulgarian forces.

She, too, invaded Serbia, which was overrun and virtually ceased to exist as a nation.

Zaharije invaded Serbia with a Bulgarian force, and ousted his cousin Pavel in 922.

As a consequence Bulgaria joined the Central Powers and invaded Serbia, an event leading to Serbia's final collapse.