Helmets are tough issue to deal with; to someone in the west is might seem pretty clear cut.
Sikhs have a long history of soldiering. They have fought through India, Asia, Europe, Africa, and the Pacific. As far as I know they never wore helmets.
I’m not versed enough on Sikh theology to really go out on a limb and state a consensus view here. I can state that in my conversations I have come across people who are vehemently against it and people who don’t think it’s a major issue. I often get the line “God decides when you die, wearing a helmet will not change your destiny”, (I paraphrased that by the way).
In India there are 1000s of Sikh soldiers who are regularly in operational conditions. They do not wear helmets. In fact Sikhs do not wear helmets in any job in India; not for motorcycles, not on construction sites etc…
I personally don’t like wearing a helmet…they are not the most comfortable things to put on. I do however wear one. I tie a dastar, (a touch smaller than I normally would), and place the helmet over top.
The other Sikhs I’ve come across in the CF wear helmets over their Turbans or Patkas. No helmet = no CF service.
DSB

Pulling and patching while eating cantaloupe, a great day.

Usually I tie a small dastar and wear a helmet on top. If I’m doing a lot of activity I’ll tie a patka.
This picture was taken during a break in my JNCO. It was hot; you can see how the sweat has ruined my cam.

In this one you can see my smaller dastar… a ‘goal pug’. That’s what I usually wear in the field.