The thrust of this study was to ascertain the role of public relations in building corporate image of the Nigeria Army especially on issues that surrounds Boko-Haram insurgency, Niger Delta militants and Fulani herdsmen among others. The Directorate of Army Public Relations (DAPR) has remained a powerful mouth piece of the Nigeria Army in building and maintaining good image of the Nigeria Army. Model of Public Relations by Grunig and Hunt and Technological Determinism Theory were adopted to justify the position of this research. Survey research method was adopted with questionnaire as data collection instrument to elicit responses from the Nigeria Army particularly those at the PRs unit in Lagos state cantonment, Ikeja. One hundred (100) respondents were picked from the various departments of the Nigeria Army particularly PRs unit using purposive sampling method while out of 100 copies of questionnaire administered; ninety (90) copies were retrieved and analysed using frequency and percentage table method. Findings show that the Directorate of Army Public Relations (DAPR) know its onion by updating Nigerians and outside world on various successes and challenges facing the Nigeria Army. It is recommended that the PRs unit should be more conscious in dealing with the media to afford given sensitive information to the members of the press who are always on their neck to break news while social media platform must be used carefully to prevent fear and panic among other things.