Can a chemical alter the genome of a parent(s) and then be passed through the germline onto the offspring

I am critiquing a scientific journal on the Impact of Chemical Warfare with Agent Orange on Women's Reproductive Lives in Vietnam.

My question is, could the chemical agent orange have changed (mutated) the genome of the women that had been directly exposed to the agent and then have passed that mutated gene (genome) on to her offspring through her germline?

If so, could those offspring, if capable of reproduction, keep this mutation going?

For example, rise of the planet of the apes. The mother was injected with a chemical, that then was passed onto her offspring...

Yes. that is how genetic diseases are transferred to offspring - through the germline (with a few caveats, but not important). And yes, mutant genes can be passed from generation to generation thereafter (provided the mutation isn't genetically lethal, killing the offspring before they can pass it on).

Yes. It will remain in the genetic code - whether from chemical, radiation, or 'natural' mutation, 'till' something else happens to the gene in some subsequent generation!