We all saw the sell-off yesterday when India announced that it carried out surgical strikes in Pakistan occupied Kashmir.
Result – markets tumbled down, mainly due to panic.
Expect the markets to remain volatile for a while now till the situation totally calms down. I guess this must have reflected on your investments yesterday.
Here are historical graphs from previous wars:
Sensex during Kargil war which was fought between May and July 1999:

Dow Jones during World War 2:

Sensex both graphs sourced from Google finance.
Dow Jones graph source – @Prashanth_Krish twitter