HI,
Honesty is the best policy.
We may think that the moment it is disclosed that the services were terminated on disciplianry issues it is and end of the carreer. If it is hidden then any time this can come out either by the antecedent verification or any post process and may lead to further complications.
It can be explained, and also can be indicated that due to certain misunderstanding this had happened and the previous employer did not have any leneiency. There are instances of people having got employment after making such revealtions and confessions.
The only case where it becomes extremely difficult to convince is that of termination on grounds of breach of inetgrity and sexual harassment.
Kind regards
Dayanand L Guddin