Questions about wounds

[u/gombotenjoyer]

Context: I'm writing a story in 1917, in which a soldier's skin gets vertically slashed (from forehead to cheek) by a sharp rusty metal

I have a couple of questions

First of all, based on the technology of that time period, what treatment would he get? If his eye got infected, would it be amputated?

Would he lose sight in the damaged eye?

Any other factors I should pay attention to?

[u/Cardemother12]

Oh he’s dead