Well I will offer a rather different feeling to most.
Children are incredibly resilient I do believe. I feel that it's helpful to your well being to have comfort in this knowledge.
Children have zero choice but to survive and navigate situations we can't always comprehend in order to survive to adulthood. Their instincts are naturally excellent beyond anything in adulthood which enables them to navigate and cope. They know they must for survival ( instincts) and they will become experts hopefully at finding some way through so much we as adults think, how?! This is resilience.
I don't think many kids escape trauma. There will be different levels and it depends whether you're female, male, your personality type and neurotype and what was around you in the aftermath.
For some, the trauma will lead often to the development of high empathy, compassion and a re awakening of excellent intuition into adulthood. That suffering can create beauty. For others it may lead to self destruction.
My father died in horrific circumstances, I went to school the next day. I was ok, highly resilient because my instincts as a child saved me.
By adulthood I suffered, my body reacted and told me I had to look at this now. I worked through it, I still do. I connect with nature, animals and people who have suffered on a scale of depth and intensity that I did and the connection is beyond anything. Without that suffering it wouldn't be possible to feel things as strongly as I do, I'm sure. That trauma was compounded by awful family dynamics requiring constant high alert. Again, that built a huge capacity to empathise in time as an adult.
Sometimes that childhood suffering will appear and the work needed in adulthood to try sort it out isn't easy or accessible and the understandable desire to medicate with drugs and alcohol takes over.
I know so many for whom this didn't happen. It wasn't all an horrific outcome in adulthood.
Knowing your children really are resilient and will get through this and find something in this horrendous suffering that might grow for them ( empathy, love and compassion), I believe to be true.