A control device comprising: a compression control unit that, in a case in which continuous imaging that captures a radiographic image of a breast compressed by a compression member and then captures an ultrasound image of the breast while maintaining the compressed state is performed, performs control to set a force of the compression member compressing the breast to a first force in the capture of the radiographic image and to change the force of the compression member compressing the breast from the first force to a second force lower than the first force in the capture of the ultrasound image; and an acquisition unit that acquires mammary gland amount information indicating an amount of mammary gland in the breast, or region information indicating a mammary gland region in the breast on the basis of the radiographic image, characterized in that , in a case in which the amount of mammary gland indicated by the mammary gland amount information is equal to or less than a predetermined amount of mammary gland, or a size of the mammary gland region indicated by the region information is equal to or less than a predetermined size, the compression control unit performs control to change the force of compressing the breast in the capture of the ultrasound image from the first force to the second force, and in a case in which the amount of mammary gland indicated by the mammary gland amount information is more than the predetermined amount of mammary gland, or the size of the mammary gland region indicated by the region information is greater than the predetermined size, the compression control unit performs control to maintain the force of compressing the breast in the capture of the ultrasound image at the first force, instead of changing the force to the second force. a compression control unit that, in a case in which continuous imaging that captures a radiographic image of a breast compressed by a compression member and then captures an ultrasound image of the breast while maintaining the compressed state is performed, performs control to set a force of the compression member compressing the breast to a first force in the capture of the radiographic image and to change the force of the compression member compressing the breast from the first force to a second force lower than the first force in the capture of the ultrasound image; and an acquisition unit that acquires mammary gland amount information indicating an amount of mammary gland in the breast, or region information indicating a mammary gland region in the breast on the basis of the radiographic image, characterized in that , in a case in which the amount of mammary gland indicated by the mammary gland amount information is equal to or less than a predetermined amount of mammary gland, or a size of the mammary gland region indicated by the region information is equal to or less than a predetermined size, the compression control unit performs control to change the force of compressing the breast in the capture of the ultrasound image from the first force to the second force, and in a case in which the amount of mammary gland indicated by the mammary gland amount information is more than the predetermined amount of mammary gland, or the size of the mammary gland region indicated by the region information is greater than the predetermined size, the compression control unit performs control to maintain the force of compressing the breast in the capture of the ultrasound image at the first force, instead of changing the force to the second force. <EOS>