<s>[INST] Can you provide examples of persons mentioned in the text who hold office during the pleasure of the President? [/INST] Yes, according to the text, the following examples of persons who hold office during the pleasure of the President are mentioned: 
- members of a defence service;
- members of an all-India service;
- members of a civil service of the Union; and
- persons holding any post connected with defense or any civil post under the Union. </s>