| objective | Sampling method | Sample size | Instrument | Appendix |
| British soldiers | Stratified, purposive and simple random sampling | 98 | Questionnaire and In-depth interview guide | A |
| Kenyan soldiers | Stratified, purposive and simple random | 98 | Questionnaire and In-depth interview guide | B |
| Residents and Indigenous People (Opinion leaders) | Sampling | 188 | Questionnaire and In-depth interview guide | C |
| Total |
| 384 |
|
|