Argentine F9F Panther lay destroyed after being shot up by Argentine Shermans during the Azules vs Colorados infighting, 1962.

The Azules vs Colorados (Blues vs Reds) was a small scale armed conflict between slightly leaning Peronist Army and Air Force officers and generals and the anti-Peronist Navy officers. The Army and Air Force (Blue) officers wanted to include the Peronists in the resolution of social conflicts (Peronism was banned after Perón fled the country following the "Revolución Libertadora" in 1955). Meanwhile, the Navy (Red) was heavily anti-Peronist as they were the ones responsibles for the Bombing of Plaza de Mayo in June 1955, leaving 300 civilians dead, during the "first" government of Juan Domingo Perón.

The fighting was rather sporadic, with several skirmishes between the two forces. At the end, the Reds, the Navy, insurgents were defeated and they lost power after the 1963 National Elections.

-When you lay the Mk. V mines with the No73 "Thermos" kit (you can find it in Alam Halfa, Fall of Tobruk and Sidi Rezegh, maybe more), the red skull doesn't appear.

It does:

-Also, is it normal that the Hawkins AT mine disappears too early being alive? At least that is what happens in Luttich.
They should last like the rest of AT mines, right? (as long as you are alive they won't disappear)

No, they are codded differently, with their weird time-to-live set to something between a mine and a greande, which is btw, a thing I never understood.

-When you lay the Mk. V mines with the No73 "Thermos" kit (you can find it in Alam Halfa, Fall of Tobruk and Sidi Rezegh, maybe more), the red skull doesn't appear.

-Also, is it normal that the Hawkins AT mine disappears too early being alive? At least that is what happens in Luttich.
They should last like the rest of AT mines, right? (as long as you are alive they won't disappear)