They were criminals. Back then criminals weren't given luxuries like they are today. They were the lowest of the low and were treated as such.
They were treated as criminals.
Criminals were treated poorly if they got caught stealing one tiny loaf of bread they could be in prison for ten years and even for life.
In the past, severing a nerve's connection to the CNS has treated intractable pain.
The form of a verb, ending in 'ed' in English is used in forming perfect and passive tenses. The simple past is 'I treated'. The past continuous is 'I was treating'. The past perfect continuous is ' I have been treating'. The past subjunctive is 'I treated'. The past perfect subjunctive is 'I had treated'
Amnesty is a way for past criminals to be forgiven.
The past tense of treat is treated.
badly...
treated
They were Redemptioners sent to the Colonies to work and to reedeem themselves. They were not harshly treated because they were a valuable commodity. Labor was badly needed and labor they performed.
Conscientious objectors were treated terribly. COs were seen as criminals and they were forced to work in labour camps and were tortured if they did not work. Many were shot due to objection.
There actions may well be construed as war crimes and should be dealt with by the military.