Final answer:
The armies began to fight within 'The Day of Destiny' as they ran into each other accidentally while maneuvering to their intended positions. This chance encounter escalated into a full-blown battle between the Confederate and Union armies during the Battle of Gettysburg.
Step-by-step explanation:
The armies began to fight within 'The Day of Destiny' because they ran into each other by accident as they were maneuvering to their intended positions. This chance encounter led both sides to form and prepare for battle.
For example, during the Battle of Gettysburg, units from both the Confederate and Union armies stumbled upon each other on July 1. This unexpected meeting sparked a full-blown battle. The Confederates, with 30,000 soldiers, managed to drive the Union forces, consisting of 20,000 soldiers, back.
The armies' clash on 'The Day of Destiny' demonstrates how a simple accidental encounter can escalate into a large-scale battle with significant consequences.