| Abbreviation | Definition |
|---|---|
| CMCR | Mechanic Constructionman Recruit |
| CMCR | nstruction Mechanic Constructionman Recruit |
| CMCS | Construction Mechanic Senior Chief Petty Officer |
| CMCS | nstruction Mechanic Senior Chief Petty Officer |
| CMD1 | Construction Mechanic (diesel) Petty Officer First Class |
| CMD1 | nstruction Mechanic (diesel) Petty Officer First Class |
| CMD2 | Construction Mechanic (diesel) Petty Officer Second Class |
| CMD2 | nstruction Mechanic (diesel) Petty Officer Second Class |
| CMD3 | Construction Mechanic (diesel) Petty Officer Third Class |
| CMD3 | nstruction Mechanic (diesel) Petty Officer Third Class |
| CMDC | Construction Mechanic (diesel) Chief Petty Officer |
| CMDC | nstruction Mechanic (diesel) Chief Petty Officer |
| CMDCA | Construction Mechanic (diesel) Constructionman Apprentice |
| CMDCA | nstruction Mechanic (diesel) Constructionman Apprentice |
| CMDCN | Construction Mechanic (diesel) Constructionman |
| CMDCN | nstruction Mechanic (diesel) Constructionman |
| CMDCR | Construction Mechanic (diesel) Constructionman Recruit |
| CMDCR | nstruction Mechanic (diesel) Constructionman Recruit |
| CMG1 | Construction Mechanic (gasoline) Petty Officer 1st Class |
| CMG1 | nstruction Mechanic (gasoline) Petty Officer 1st Class |