The War Elephant was a cut enemy in God of War: Chains of Olympus, appearing only in the unlockable video "Making of Attica" and in the "Outtakes" image gallery. In the video, the Persian King is riding this creature on a small walkway where Kratos must kill it.
Elephants are powerful working animals. Numerous cultures used them in war, including the Persians in their wars with the Greeks. The most famous case was at the Battle of the Hydaspes River in 327 BC. Alexander the Great's campaign to reach the Eastern sea failed because his men were terrified of the elephants used by King Porus of Taxilia. Afterwards, during the Punic Wars, the Carthaginian general Hannibal Barca sent an army of 37 elephants across the Alps and nearly destroyed Rome. In 197 BC, the Romans confronted the Macedonian army at Cynosephelae, deploying 20 elephants as part of their invasion force. Although elephants have a bad reputation in antiquity as being unpredictable, they served the Romans extremely well in breaking up numbers of Macedonian phalangites.