summarize the story of the roman father with two sons

it sounds like you're talking about the story of the horatii brothers, which is a pretty intense piece of roman history. basically, there was a war between rome and alba longa, and they decided to settle it by picking three brothers from each side to fight to the death instead of dragging the whole army into it. the roman side picked three brothers named the horatii, and the albans picked three brothers called the curiatii. it's a super dramatic story about duty and what happens when family ties clash with loyalty to the state.

the sad part is that only one of the horatii brothers survived, and when he walked back into rome, he found his own sister mourning one of the curiatii because she was actually engaged to him. he got so furious at her for grieving the enemy instead of celebrating the roman victory that he killed her right there on the spot. it really makes you think about how different things were back then, where the laws and the sense of duty were just so rigid that it led to such a tragic ending for his own flesh and blood.